S4 - Stream Computing Platform
For more information, see s4.io
- Java 1.6
Build using Gradle
USAGE: gradlew TASK1, TASK2, ...
- clean: deletes all the build dirs
- jar: creates all the jars in PROJECT/build/libs
- binImage: creates an image in the ./build subdir that includes jars, scripts, and other resources required to run the S4 server and sample applications.
- binTgz: same in a gzipped tar file in ./build/distributions.
- allImage: creates an image in the ./build subdir that includes what is in binImage plus sources, javadoc, and other documents.
- allTgz: same in a gzipped tar file in ./build/distributions.
- install: installs jars and POMs in local Maven repo (eg. ~/.m2)
The S4 Image Structure
build/s4-image/ bin/ s4-ext/ s4-example-apps/ s4-apps/ app-name1/ lib/ (app-name1-*.jar) app-name1-conf.xml s4-core/ lib/ conf/ lock/ logs s4-driver/lib/ driver jar dependencies jars java examples jar bin/ python, perl, and shell scripts
Running the Twitter Topic Count Example
# Download the project files from the repository. git clone https://github.com/s4/s4.git # Create image gradlew allImage # Change permissions # (Until this Gradle bug is fixed: http://issues.gradle.org/browse/GRADLE-796) chmod u+x ./build/s4-image/scripts/* # Copy S4 application to deployment dir (s4-apps) cp -rp build/s4-image/s4-example-apps/s4-example-twittertopiccount build/s4-image/s4-apps/ # Enter your twitter user/pass in config file $EDITOR build/s4-image/s4-apps/s4-example-twittertopiccount/adapter-conf.xml # Start server with s4-example-twittertopiccount app ./build/s4-image/scripts/start-s4.sh & # Start adapter ./build/s4-image/scripts/run-adapter.sh -x -u build/s4-image/s4-apps/s4-example-twittertopiccount/lib/s4-example-twittertopiccount-0.3-SNAPSHOT.jar -d build/s4-image/s4-apps/s4-example-twittertopiccount/adapter-conf.xml & # Check output cat /tmp/top_n_hashtags
Developing with Eclipse
gradle eclipse will create an eclipse project that you can import from the Eclipse IDE.
There is now a Gradle plugin for the Eclipse IDE. To install Gradle without installing the full Spring development environment follow the instructions under the heading "Installing from update site". There is also a discussion in the Gradle mailing list.